MySQL in a Nutshell, 2nd Edition

Appendix B. Operators

Operators are used in mathematical or logical operations. An operator is typically placed between two values (i.e., numbers, strings, columns, or expressions) that you want to compare or evaluate. There are four types of operators: arithmetic, relational, logical, and bitwise. This appendix provides a listing of operators grouped into these four types. This appendix also includes a list of special pattern-matching characters and constructs for regular expressions.